Follow-up with my son's behavior

Hi everyone! Last year I posted about my son having behavioral issues in kindergarten, Well to follow up he is now in 1st grade and is in private school. We chose private school for the education as well as the smaller classes. As of now we are still having the same issues with him. His behavior is totally off the wall however, academically he is doing Great! I spoke with his Dr. about what is going on and he thinks that he is just spoiled and is hyper. He doesn't believe that he ADHD at all. So here I am again and this year we are going to try and get a TSS worker to sit with him in school. Everything is in motion just waiting for hit to happen. Has anyone ever had their child with a TSS worker? Does it help?? Any bad experiences with a TSS worker??